CN109510261A - A kind of charging circuit and charging system - Google Patents
A kind of charging circuit and charging system Download PDFInfo
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- CN109510261A CN109510261A CN201811391484.1A CN201811391484A CN109510261A CN 109510261 A CN109510261 A CN 109510261A CN 201811391484 A CN201811391484 A CN 201811391484A CN 109510261 A CN109510261 A CN 109510261A
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- 230000009467 reduction Effects 0.000 claims abstract description 37
- 239000004065 semiconductor Substances 0.000 claims description 88
- 238000001514 detection method Methods 0.000 claims description 22
- 238000007689 inspection Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 17
- 230000006837 decompression Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000012358 sourcing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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Classifications
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- H02J7/0026—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00038—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors
- H02J7/00041—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange using passive battery identification means, e.g. resistors or capacitors in response to measured battery parameters, e.g. voltage, current or temperature profile
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H02J7/0072—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to battery technology field, a kind of charging circuit and charging system are disclosed.Wherein, which includes: voltage input end, first voltage output end, second voltage output end, step-up/step-down circuit and reduction voltage circuit.Step-up/step-down circuit is used to receiving and adjusting the input voltage inputted by voltage input end, to obtain the first adjustment voltage, and by the first adjustment voltage output to first voltage output end, is charged using exporting the first output voltage by first voltage output end as battery；Reduction voltage circuit is used to receiving and adjusting the first adjustment voltage inputted by step-up/step-down circuit, to obtain second adjustment voltage, and by second adjustment voltage output to second voltage output end, is charged using exporting the second output voltage by second voltage output end as electrical equipment.Charging circuit provided in an embodiment of the present invention is adapted to the input voltage of different charging units, so that different charging units is able to satisfy the charging requirement of battery.
Description
Technical field
The present invention relates to battery technology fields, more particularly to a kind of charging circuit and charging system.
Background technique
The operation of electronic equipment provides electric energy dependent on battery for it.For example, with aircraft, for unmanned plane, nobody
The flight of machine and the realization for the functions such as take photo by plane, the electric energy for be unableing to do without battery provide.Currently, constantly mentioning with unmanned air vehicle technique
Height, unmanned plane also increasingly have been favored by people, meanwhile, requirement of the people to unmanned plane is also higher and higher.Wherein, for nothing
For man-machine, cruising ability is to measure an important indicator of unmanned plane performance.And since the energy for being limited to its battery is close
Degree is promoted relatively slower always the cruise duration of unmanned plane.Relatively good unmanned plane is made in terms of cruise duration at present
Cruise duration generally also only has 30 minutes or so.If it is intended to unmanned plane flies more long, it can be by carrying more standby electricities
Pond carries out the replacement of battery when battery capacity deficiency；Or charge the battery, with guarantee unmanned plane flight and
It takes photo by plane needs.
For the mode of more carrying about standby batteries, it is clear that will increase the expense of user and carry burden, to cause to use
The worry at family.It is carried for the case where unmanned plane goes outdoor flight especially for user, since outdoor charging is inconvenient, it will usually
The flight time of aircraft is improved by carrying muti-piece reserve battery, and carrying can additionally be increased by carrying muti-piece reserve battery
Worry.For the mode charged the battery, due to the voltage under normal conditions for the charging unit for battery charging
With the voltage and mismatch of battery, also, the output voltage of charging unit and unstable, therefore, it is necessary to the defeated of charging unit
Voltage is adjusted out, will be adjusted after voltage transmission to battery, to guarantee charging normal for battery.
Reduction voltage circuit is generallyd use at present or booster circuit carries out voltage adjustment.And only with reduction voltage circuit or booster circuit
The input voltage of different charging units cannot be well adapted to, so that different charging units is not well positioned to meet electricity
The charging requirement in pond.For example, usually battery such as meets the power requirement of the lift-off of the motor of unmanned plane to meet power supply needs
Deng, battery generally using the battery structure more gone here and there, voltage is in one voltage range, and usually various charging units
Voltage range can not be matched with the voltage range of cell voltage well, for example, the voltage range of battery is 9V-13V, and be filled
The voltage of electric installation is 10V-14V.At this point, if being only to carry out decompression adjustment to the voltage of charging unit using reduction voltage circuit,
Or be only that boosting adjustment is carried out to the voltage of charging unit using booster circuit, the charging unit can not be made to be able to satisfy
The requirement of battery charging.
Summary of the invention
The embodiment of the present invention is intended to provide a kind of charging circuit and charging system, is adapted to the defeated of different charging units
Enter voltage, so that different charging units is able to satisfy the charging requirement of battery.
The embodiment of the invention discloses following technical schemes:
In a first aspect, the embodiment of the invention provides a kind of charging circuits, comprising:
Voltage input end, first voltage output end, second voltage output end, step-up/step-down circuit and reduction voltage circuit, it is described
Voltage input end is connect with the step-up/step-down circuit, the step-up/step-down circuit and the first voltage output end and decompression electricity
Road connection, the reduction voltage circuit are connect with the second voltage output end；
The step-up/step-down circuit is for receiving and adjusting the input voltage inputted by the voltage input end, to obtain first
Voltage is adjusted, and by the first adjustment voltage output to the first voltage output end, to export by the first voltage
End the first output voltage of output is battery charging；
The reduction voltage circuit is for receiving and adjusting the first adjustment voltage inputted by the step-up/step-down circuit, to obtain
To second adjustment voltage, and by the second adjustment voltage output to the second voltage output end, to pass through second electricity
Output end is pressed to export the second output voltage as electrical equipment charging.
In some embodiments, the charging circuit further includes feed circuit, the feed circuit and the first voltage
Output end and step-up/step-down circuit connection；
The feed circuit is used to the first output voltage that the first voltage output end exports feeding back to the lifting
Volt circuit, the step-up/step-down circuit carry out voltage adjustment according to first output voltage and input voltage.
In some embodiments, the step-up/step-down circuit includes any one in following buck chip: BQ25700A,
SC8802、ISL95338。
In some embodiments, when the step-up/step-down circuit includes BQ25700A, if the BQ25700A detects institute
Input voltage is stated higher than first output voltage, the BQ25700A is in decompression state, to carry out decompression adjustment；If described
BQ25700A detects the input voltage lower than first output voltage, and the BQ25700A is in pressure-increasning state, with into
Row boosting adjustment.
In some embodiments, the BQ25700A includes: control chip, the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd MOS
Pipe, the 4th metal-oxide-semiconductor, the first inductance, first capacitor；
The drain electrode of first metal-oxide-semiconductor is connect with the voltage input end, the grid of first metal-oxide-semiconductor and the control
The HIDRV1 pin of chip connects, and the source electrode of first metal-oxide-semiconductor is connect with the drain electrode of second metal-oxide-semiconductor, also, described the
The drain electrode of two metal-oxide-semiconductors is also connect with one end of first inductance, the source electrode ground connection of second metal-oxide-semiconductor, second metal-oxide-semiconductor
Grid with it is described control chip LODRV1 pin connect, the leakage of the other end of first inductance and the third metal-oxide-semiconductor
Pole connection, also, the drain electrode of the third metal-oxide-semiconductor is also connect with the source electrode of the 4th metal-oxide-semiconductor, the source of the third metal-oxide-semiconductor
Pole ground connection, the grid of the third metal-oxide-semiconductor are connect with the LODRV2 pin of the control chip, the grid of the 4th metal-oxide-semiconductor
It being connect with the LODRV2 pin of the control chip, the drain electrode of the 4th metal-oxide-semiconductor is connect with the first voltage output end, and
And the drain electrode of the 4th metal-oxide-semiconductor is also connect with one end of the first capacitor, the other end ground connection of the first capacitor；
When the input voltage is higher than first output voltage, first metal-oxide-semiconductor is in second metal-oxide-semiconductor
Switch state, the third metal-oxide-semiconductor are in an off state, and the 4th metal-oxide-semiconductor is in the conductive state, to carry out decompression adjustment；
When the input voltage is lower than first output voltage, the third metal-oxide-semiconductor and the 4th metal-oxide-semiconductor are in switch shape
State, second metal-oxide-semiconductor are in an off state, and first metal-oxide-semiconductor is in the conductive state, to carry out boosting adjustment.
In some embodiments, the charging circuit further includes QC protocol sensing circuitry, the QC protocol sensing circuitry with
The second voltage output end and reduction voltage circuit connection；
The second output voltage that the QC protocol sensing circuitry is used to export the second voltage output end carries out QC association
View detection, if meeting QC agreement, the reduction voltage circuit will be exported to the second adjustment voltage of second voltage output end and is adjusted to
The corresponding voltage for meeting QC agreement, to be input to the second voltage output end.
In some embodiments, the QC protocol sensing circuitry includes any one in following QC protocol detection chip:
IP2161、TP1001、FP6601Q。
In some embodiments, when the QC protocol sensing circuitry includes IP2161, the second voltage output end is
USB port, the USB port include data minus signal end and data positive signal end, the DM pin and the USB of the IP2161
The data minus signal end of port connects, and the DP pin of the IP2161 is connect with the data positive signal end of the USB port.
In some embodiments, the charging circuit further includes overvoltage crowbar, and the overvoltage crowbar included
Pressure input terminal and over-voltage output end, the over-voltage input terminal are connect with voltage input end, the over-voltage output end and the lifting
Volt circuit connection；
The overvoltage crowbar is for preventing the input voltage excessively high.
In some embodiments, the charging circuit further includes the first inspection leakage resistance and the second inspection leakage resistance, the lifting
Volt circuit includes buck input terminal and buck output end, and the first inspection leakage resistance is connect with the buck input terminal,
The second inspection leakage resistance is connect with the buck output end；
It is input to the input current of the step-up/step-down circuit by the first inspection leakage resistance detection, is examined by described second
Leakage resistance detects the output electric current from the step-up/step-down circuit, also, the input current and the output circuit are stored in institute
State step-up/step-down circuit.
In some embodiments, the charging circuit further includes processor, and the processor and the step-up/step-down circuit are logical
Letter connection；
The processor is used to transfer data to the step-up/step-down circuit by the communication connection, for the buck
Circuit configuration Current Voltage parameter.
In some embodiments, the charging circuit further includes temperature sensing circuit, the temperature sensing circuit with it is described
Processor connection；
The temperature sensing circuit is used to detect temperature information during the charging process, and the temperature information is sent to
The processor, the processor carry out temperature adjustment according to the temperature information.
In some embodiments, the charging circuit further includes display device, and the display device and the processor connect
It connects；
The display device is for showing charging status information.
In some embodiments, the charging circuit further includes linear voltage regulator, the linear voltage regulator and the processing
Device connection, the linear voltage regulator are used to carry out steady pressure treatment to the voltage for being input to the processor.
In second aspect, the embodiment of the invention provides a kind of charging system, the charging system is for being respectively battery
It charges with electrical equipment；
The charging system includes charging unit and charging circuit as described above, and the charging unit and the charging are electric
Road connection, also, the charging circuit is connect with the battery and the electrical equipment respectively；
The charging unit is used to provide the described input voltage, and the input voltage is after charging circuit adjustment to divide
It Wei not the battery and electrical equipment charging.
In some embodiments, the charging unit is the battery of automobile, and the battery is the battery of aircraft, described
Electrical equipment is the remote control device of aircraft.
In each embodiment of the present invention, the input by the step-up/step-down circuit of charging circuit to its voltage input end is inputted
Voltage carries out buck adjustment, so that the charging circuit is adapted to the input voltage of different charging units, so that not
Same charging unit is able to satisfy the charging requirement of battery.Also, the charging circuit is passing through first voltage output end output first
While output voltage for battery to charge, the second output voltage is also exported to fill for electrical equipment by second voltage output end
Electricity, to realize the effect that can be charged simultaneously to battery and electrical equipment.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of schematic diagram of the application environment of charging circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of charging circuit provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of another charging circuit provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of BQ25700A provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of DC-DC buck converter provided in an embodiment of the present invention；
Fig. 6 is the schematic diagram of IP2161 provided in an embodiment of the present invention；
Fig. 7 is that the embodiment of the present invention provides a kind of schematic diagram of charging system.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.Obviously, described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to type of the present invention
The normally understood meaning of technical staff it is identical.Description tool is intended merely in the term used in the description of invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.In addition, involved in the various embodiments of the present invention described below
And to technical characteristic can be combined with each other as long as they do not conflict with each other.
Battery is as the necessary parts that energy source is that various electronic equipments are run.However, due to the energy density of battery
Limitation, so that the time that battery can provide electric energy for electronic equipment is limited.For example, by taking aircraft such as unmanned plane as an example,
Electric energy is provided for each system of unmanned plane dependent on battery, to guarantee the flight of unmanned plane and take photo by plane.
Wherein, the power-on time of battery determines cruise duration namely the cruising ability of unmanned plane, and when the continuation of the journey of unmanned plane
Between, cruising ability be measure unmanned plane performance a key factor.Due to being limited to battery, the cruise duration of unmanned plane is promoted
It is relatively slow always.The cruise duration that can be reached of the relatively good unmanned plane usually done on duration performance at present is also with regard to 30
Minute or so.
Therefore, for the flight time that unmanned plane increases unmanned plane, allow to fly is more long, usually carries several pieces
Reserve battery, or usually charging unit is that the battery of unmanned plane charges.
And the mode for carrying muti-piece battery, cost is on the one hand increased, on the other hand increases and carries burden, especially
For the flight of outdoor unmanned plane, carrying muti-piece reserve battery can inevitably cause very big carrying worried to user.
And for charging unit be battery charging by way of, due to the voltage of usual charging unit and the voltage of battery
Might not match, if mismatch, generally require and the voltage of charging unit be adjusted, will be adjusted after voltage transmission
To battery, to guarantee charging normal for battery.
Currently, being usually to carry out voltage adjustment using reduction voltage circuit or booster circuit.Although passing through reduction voltage circuit or boosting
The regulation of electrical circuit charging unit can solve carrying muti-piece battery in a manner of for battery charging and cause problem inconvenient to carry, but
It is the input voltage of different charging units cannot to be well adapted to only with reduction voltage circuit or booster circuit, so that not
Same charging unit is not well positioned to meet the charging requirement of battery.
For example, usually battery is to meet power supply needs, such as meets the power requirement of the lift-off of the motor of unmanned plane,
Battery is generally using the battery structure more gone here and there, and voltage is in one voltage range, and the voltage of usually various charging units
Range can not be matched with the voltage range of cell voltage well, for example, battery made of being concatenated as 3 single batteries, it should
The voltage range of battery is 9V-13V, and the voltage of charging unit is 10V-14V.At this point, if being only to use reduction voltage circuit pair
The voltage of charging unit carries out decompression adjustment, or is only to carry out boosting tune to the voltage of charging unit using booster circuit
It is whole, the charging unit can not be made to be well positioned to meet the requirement of battery charging.
Based on this, the embodiment of the invention provides a kind of charging circuit and charging systems, pass through the buck of charging circuit
Circuit carries out buck adjustment to the input voltage for inputting its voltage input end, fills so that the charging circuit is adapted to difference
The input voltage of electric installation, so that different charging units is able to satisfy the charging requirement of battery.
In addition, the charging circuit is same to charge for battery by first voltage output end the first output voltage of output
When, the second output voltage is also exported to charge for electrical equipment by second voltage output end, so that realizing can be simultaneously to electricity
The effect of pond and electrical equipment charging.
With reference to the accompanying drawing, charging circuit provided in an embodiment of the present invention and charging system are specifically described.
Please refer to the schematic diagram for the application environment that Fig. 1 is charging circuit provided in an embodiment of the present invention.Wherein, the application
It include: charging unit 100, charging circuit 200, battery 300 and electrical equipment 400 in environment.The charging unit 100 and institute
The connection of charging circuit 200 is stated, also, the charging circuit 200 is connect with the battery 300 and the electrical equipment 400 respectively.
The charging unit 100 is used to provide the described input voltage, and the input voltage is adjusted through the charging circuit 200
Afterwards to be respectively that the battery 300 and the electrical equipment 400 charge.
Wherein, charging circuit 200 to the adjustment of input voltage include: to input voltage carry out buck adjustment so that
Charging circuit 200 is exported to the voltage of the battery 300 and is matched with the operating voltage of battery 300, to realize to the battery
300 charging；After carrying out buck adjustment to input voltage, then decompression adjustment is carried out, so that charging circuit 200 is exported to institute
The voltage for stating electrical equipment 400 meets the agreement of output port defined, to realize the charging to the electrical equipment 400.
It should be noted that the agreement can be any suitable agreement.Such as in order to realize to the quick of electrical equipment 400
Charging, which can be QC (high pass, Quick Charge) agreement.For example, QC2.0 fast charge protocol, QC3.0 quickly fill
Electric agreement, QC4.0 fast charge protocol etc..
The charging unit 100 can for it is any can be with input voltage, to be embodied as battery 300 and electrical equipment 400
The charging unit of charging, for example, automobile storage battery, charger baby, charger etc..
The charging circuit 200 is the hardware circuit built by various hardware devices, chip etc., which can
To include buck chip, pressurization chip, protection circuit etc..
The battery 300 can be various electronic equipments battery, for example, the battery 300 can for aircraft battery,
Battery of electric bicycle etc..The battery 300 can be lithium battery, nickel-cadmium cell or other batteries etc..Wherein, this flies
Row device may include: dirigible, unmanned plane, unmanned boat etc..Below using unmanned plane as the example of aircraft.
Wherein, it is rotor craft (rotorcraft) that unmanned plane, which can be, for example, passing through air by multiple pushing meanss
The multi-rotor aerocraft of promotion, the embodiment of the present invention are not limited to this, and unmanned plane is also possible to other types of unmanned plane, such as
Fixed-wing unmanned plane, unmanned airship, umbrella wing unmanned plane, flapping wing unmanned plane etc..
Unmanned plane may include: the battery and motor of flight control system, unmanned plane.The battery of unmanned plane respectively with flight
Control system and motor connection, to provide electric power for flight control system and motor, to guarantee the flight of unmanned plane.And
And flight control system is connect with communications, to send control instruction to motor, to control unlatching or the pass of motor
It closes.
Generally for the power requirement etc. of the lift-off for the motor for meeting unmanned plane, battery is generally using the battery knot more gone here and there
Structure, for example, the battery of unmanned plane is connected in series by 3,4 single batteries.Wherein, the quantity of the battery of unmanned plane is formed herein
With no restrictions.
And, it is understood that the name of above-mentioned each component part for unmanned plane is only the purpose for mark,
It is not construed as the limitation to the embodiment of the present invention.
The electrical equipment 400 can be the remote control device etc. of aircraft.Wherein, which can be with are as follows: remote control
Device, mobile phone, plate, wearable device etc..The control to aircraft such as unmanned planes may be implemented by remote control device.
Above-mentioned charging circuit 200 both can be very good to adapt to the input voltage of various charging units, so that different
Charging unit 100 is able to satisfy the charging requirement of battery 300, and can charge simultaneously to battery 300 and electrical equipment 400.
For example, being for the battery of aircraft, electrical equipment 400 for battery, the battery 300 of automobile with charging unit 100
For remote controler, when carrying out the outdoor flight of aircraft, since charge condition is limited, it can usually pass through the battery of automobile
It charges for the battery and remote controler of aircraft.And since the voltage of the voltage of the battery of automobile and aircraft cannot be good
Matching, for example, be 9V-13V for the voltage range of the battery for the aircraft being connected in series by 3 single batteries, and vapour
The voltage range of vehicle battery is generally in 10V-14V, therefore, in order to guarantee that the battery of automobile can fill for the battery of aircraft
Electricity can be adjusted by the buck of charging circuit 200, so that automobile storage battery is adapted to the battery of aircraft.Also, by
It is the battery of aircraft so as to realize charging unit 100 simultaneously in the setting of charging circuit 200 there are two voltage output port
It charges with remote controler, so as to the charging problems of very good solution aircraft, the especially outdoor battery to aircraft fills
The problem of electricity.
It should be noted that above-mentioned charging circuit 200 can also be further extended in other suitable application environments,
And it is not limited to application environment shown in Fig. 1.Also, in actual application, the application environment can also include it is more or
The less electrical equipment of person.
Below with reference to Fig. 2, charging circuit 200 provided in an embodiment of the present invention is specifically described.Wherein, charging electricity
Road 200 includes: that voltage input end 10, step-up/step-down circuit 20, reduction voltage circuit 30, first voltage output end 40 and second voltage are defeated
Outlet 50.Wherein, the voltage input end 10 is connect with the step-up/step-down circuit 20, the step-up/step-down circuit 20 and described first
Voltage output end 40 and the reduction voltage circuit 30 connect, and the reduction voltage circuit 30 is connect with the second voltage output end 50.
The input voltage of voltage namely external equipment that the voltage input end 10 is used to receive external equipment input can be applied
It is added on the voltage input end 10.Wherein, external equipment can be above-mentioned charging unit 100, such as automobile storage battery, charger baby.
The step-up/step-down circuit 20 is connected to the voltage input end 10.The step-up/step-down circuit 20 for receive and adjust by
The input voltage that the voltage input end 10 inputs, to obtain the first adjustment voltage.Also, the step-up/step-down circuit 20 will be described
The first adjustment voltage output is to the first voltage output end 40, to pass through the first output of the first voltage output end 40 output
Voltage is the charging of battery 300.For example, for the battery charging etc. of above-mentioned aircraft.
It is adjusted by buck of the above-mentioned step-up/step-down circuit 20 to input voltage, different charging units 100 can be made
The charging requirement of battery 300 can be met, so as to be the charging of battery 300 by various charging units.Which is especially suitable
For the inconvenient situation that charges, for example, can be very good to realize automobile storage battery by the step-up/step-down circuit 20 when outdoor charging
It charges for the battery of aircraft.
In some embodiments, in order to preferably adjust input voltage, so that it is input to the voltage stabilization of battery 300, institute
Stating charging circuit 200 further includes feed circuit 60.The feed circuit 60 is a kind of completion circuit of the output quantity to input terminal loopback.
As shown in figure 3, the feed circuit 60 is connect with the first voltage output end 40 and the step-up/step-down circuit 20.
Wherein, the feed circuit 60 is for feeding back to the first output voltage that the first voltage output end 40 exports
The step-up/step-down circuit 20, so that the step-up/step-down circuit 20 carries out voltage tune according to first output voltage and input voltage
It is whole, such as carry out boosting adjustment and decompression adjustment.
The feed circuit 60 can be with resistor voltage divider circuit, for sampling the first output voltage.Resistor voltage divider circuit coupling
To first voltage output end 40, partial pressure sampling, and the first output voltage that sampling is obtained directly are carried out to the first output voltage
The step-up/step-down circuit 20 is fed back to, so that the step-up/step-down circuit 20 is carried out according to first output voltage and input voltage
Voltage adjustment.Resistor voltage divider circuit include be connected in series the first divider resistance and the second divider resistance, the first divider resistance and
The tie point of second divider resistance is the output end of resistor voltage divider circuit.
The step-up/step-down circuit 20 can be the hardware circuit being made of buck chip.Also, the step-up/step-down circuit 20 can
Think DC-DC step-up/step-down circuit.The step-up/step-down circuit 20 includes any one in following buck chip: BQ25700A,
SC8802,ISL95338.Below using BQ25700A as the example of the buck chip of step-up/step-down circuit 20, to step-up/step-down circuit
20 realization voltage adjustment are specifically described.
Wherein, the step-up/step-down circuit 20 includes: according to first output voltage and input voltage progress voltage adjustment
If the BQ25700A detects that the input voltage is higher than first output voltage, the BQ25700A is in decompression shape
State, to carry out decompression adjustment；If the BQ25700A detects that the input voltage is lower than first output voltage, described
BQ25700A is in pressure-increasning state, to carry out boosting adjustment.
Specifically, as shown in figure 4, being the schematic diagram of BQ25700A provided in an embodiment of the present invention.Wherein, described
BQ25700A includes: control chip 210, the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, third metal-oxide-semiconductor Q3, the 4th metal-oxide-semiconductor Q4, first
Inductance L1, first capacitor C1.
The drain electrode (pole D) of the first metal-oxide-semiconductor Q1 is connect with the voltage input end 10, the grid of the first metal-oxide-semiconductor Q1
Pole (pole G) is connect with the HIDRV1 pin of the control chip 210, the source electrode (pole S) and described second of the first metal-oxide-semiconductor Q1
The drain electrode of metal-oxide-semiconductor Q2 connects, also, the drain electrode of the second metal-oxide-semiconductor Q2 is also connect with one end of the first inductance L1, described
The source electrode of second metal-oxide-semiconductor Q2 is grounded GND, the LODRV1 pin company of the grid of the second metal-oxide-semiconductor Q2 and the control chip 210
It connects, the other end of the first inductance L1 is connect with the drain electrode of the third metal-oxide-semiconductor Q3, also, the leakage of the third metal-oxide-semiconductor Q3
Pole is also connect with the source electrode of the 4th metal-oxide-semiconductor Q4, and the source electrode of the third metal-oxide-semiconductor Q3 is grounded GND, the third metal-oxide-semiconductor Q3
Grid connect with the LODRV2 pin of the control chip 210, the grid of the 4th metal-oxide-semiconductor Q4 and the control chip
210 LODRV2 pin connection, the drain electrode of the 4th metal-oxide-semiconductor Q4 are connect with the first voltage output end 40, also, described
The drain electrode of 4th metal-oxide-semiconductor Q4 is also connect with one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded GND.
Wherein, the working principle of buck adjustment is carried out to input voltage by BQ25700A are as follows:
When detecting that the input voltage is higher than first output voltage, the first metal-oxide-semiconductor Q1 and described second
Metal-oxide-semiconductor Q2 is in switch state, and the third metal-oxide-semiconductor Q3 is in an off state, and the 4th metal-oxide-semiconductor Q4 is in the conductive state,
So that the BQ25700A is in decompression state, to carry out decompression adjustment.Wherein, the first metal-oxide-semiconductor Q1 and described second
Metal-oxide-semiconductor Q2 be in switch state refer to the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 disconnected with certain switching frequency or
Conducting.
When detecting the input voltage lower than first output voltage, the third metal-oxide-semiconductor Q3 and the described 4th
Metal-oxide-semiconductor Q4 is in switch state, and the second metal-oxide-semiconductor Q2 is in an off state, and the first metal-oxide-semiconductor Q1 is in the conductive state,
So that the BQ25700A is in pressure-increasning state, to carry out boosting adjustment.Wherein, the third metal-oxide-semiconductor Q3 and the described 4th
Metal-oxide-semiconductor Q4 be in switch state refer to the third metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4 disconnected with certain switching frequency or
Conducting.
It is wanted by the charging that the adjusting of BQ25700A can make various different charging units 100 that can meet battery 300
It asks, provides stable voltage for the charging of battery 300.
Referring back to Fig. 2, the reduction voltage circuit 30 is for described in receiving and adjust and being inputted as the step-up/step-down circuit 20
The first adjustment voltage, to obtain second adjustment voltage, and by the second adjustment voltage output to the second voltage output end
50, it is charged using exporting the second output voltage by the second voltage output end 50 as electrical equipment 400.For example, being aircraft
The electrical equipments charging such as remote controler.
Wherein, which can be DC-DC reduction voltage circuit.The reduction voltage circuit 30 can be made of component
Hardware circuit.For example, the reduction voltage circuit 30 may include DC-DC buck converter.
Specifically, as shown in figure 5, the DC-DC buck converter includes: switch S, diode VD, the second inductance L2, second
Capacitor C2 and resistance R.Wherein, one end of switch S connects as the input terminal and step-up/step-down circuit 20 of DC-DC buck converter
It connects, the other end of switch S is connect with the cathode of diode VD, also, the one end of the cathode of diode VD also with the second inductance L2
Connection, the plus earth GND of diode VD, the other end of the second inductance L2 is connect with one end of the second capacitor C2 and resistance R
One end connection, also, output end of the one end of the second capacitor C2 as DC-DC buck converter, the other end of the second capacitor C2
It is grounded GND, the other end of resistance R is grounded GND.Wherein, by above-mentioned DC-DC buck converter to by the step-up/step-down circuit 20
The first adjustment voltage of input carries out the working principle of decompression adjustment are as follows:
It is assumed that the voltage of input DC-DC buck converter is Vi, the voltage of output DC-DC buck converter is Vo, when opening
When closing S closure, the voltage for being added in the second both ends inductance L2 is (Vi-Vo), at this point, the second inductance L2 is by voltage (Vi-Vo) excitation,
The second increased magnetic flux of inductance L2 are as follows: (Vi-Vo)*Ton.Wherein, Ton=ton/L2, L2For the inductance value of the second inductance L2, tonFor
Switch S is closed duration.
When switch S is disconnected, continuous due to output electric current, diode VD becomes being connected, and the second inductance L2 cuts magnetic, and second
The magnetic flux of inductance L2 reduction are as follows: (Vo)*Toff.Wherein, Toff=toff/ L, toffDuration is disconnected for switch S.
When switch S, which is closed, reaches balance with the state for switching disconnection, (Vi-Vo)*Ton=(Vo)*Toff, due to duty ratio D
< 1, so Vi>Vo, to realize buck functionality.
In some embodiments, in order to realize the quick charge to electrical equipment 400, usually electrical equipment 400 is provided
The second voltage output end 50 of second output voltage is fast charge output port, and for example QC (high pass, Quick Charge) fast charge is defeated
Exit port etc..And for using the case where QC fast charge output port is to realize quick charge, it is exported by the second voltage
50 the second output voltage of output of end is before electrical equipment 400 charges, to need to carry out QC protocol detection.Wherein it is possible to be assisted by QC
Discuss the detection that detection circuit realizes QC agreement.
Specifically, as shown in figure 3, the charging circuit 200 further includes QC protocol sensing circuitry 70.Wherein, the QC association
View detection circuit 70 is connect with the second voltage output end 50 and the reduction voltage circuit 30.
The second output voltage that the QC protocol sensing circuitry 70 is used to export the second voltage output end 50 carries out
QC protocol detection.If QC protocol sensing circuitry 70, which detects, meets QC agreement, the reduction voltage circuit 30 will be exported to the second electricity
The second adjustment voltage of pressure output end 50 is adjusted to the corresponding voltage for meeting QC agreement, to be input to the second voltage output
End 50.
The QC protocol sensing circuitry 70 can be the hardware circuit being made of QC protocol detection chip.Wherein, the QC agreement
Detection circuit 70 includes any one in following QC protocol detection chip: IP2161, TP1001, FP6601Q.Below with
Example of the IP2161 as the QC protocol detection chip of QC protocol sensing circuitry 70 realizes QC agreement to QC protocol sensing circuitry 70
Detection is specifically described.
As shown in fig. 6, being the schematic diagram of IP2161 provided in an embodiment of the present invention.The IP2161 and the second voltage
Output end 50 connects.Wherein, the second voltage output end 50 is USB port, and the USB port includes data minus signal end DM
With data positive signal end DP.The DM pin of the IP2161 is connect with the data minus signal end DM of the USB port, described
The DP pin of IP2161 is connect with the data positive signal end DP of the USB port.
Wherein, QC protocol detection is carried out by IP2161, so that reduction voltage circuit 30 carries out voltage adjustment according to testing result
Several situations below:
If 1, IP2161 detect DM signal voltage be 0.6V, also, the voltage of DP signal be 0.6V when, IP2161
To its FB network sourcing current, change the feedback voltage of IP2161, reduction voltage circuit 30 is then made to be output to the voltage tune of USB port
It is whole to arrive 12V；
If 2, IP2161 detect DM signal voltage be 0.6V, also, the voltage of DP signal be 3.3V when, IP2161
To its FB network sourcing current, change the feedback voltage of IP2161, reduction voltage circuit 30 is then made to be output to the voltage tune of USB port
It is whole to arrive 9V；
If 3, IP2161 detect DM signal voltage be 0V, also, the voltage of DP signal be 0.6V when, IP2161 pairs
Its FB network sourcing current, changes feedback voltage, the voltage for then making reduction voltage circuit 30 be output to USB port is adjusted to 5V.
In addition, the default output voltage of QC fast charge agreement is 5V, only after completion QC protocol detection, reduction voltage circuit 30 just can
Export corresponding voltage value.
In some embodiments, in order to guarantee the safety in 400 charging process of battery 300 and electrical equipment, in charging electricity
The detection circuit with situations such as detecting under-voltage, over-voltage, excess temperature, overcurrent, short circuit in charging process, component is arranged in road 200
And protection circuit etc..
Specifically, Fig. 3, the charging circuit 200 please be referred to again further include: overvoltage crowbar 80, first examines leakage resistance
81, the second inspection leakage resistance 82, processor 83, temperature sensing circuit 84, display device 85 and linear voltage regulator 86.
Wherein, the overvoltage crowbar 80 includes over-voltage input terminal 801 and over-voltage output end 802, the over-voltage input
End 801 is connect with voltage input end 10, and the over-voltage output end 802 is connect with the step-up/step-down circuit 20.
The overvoltage crowbar 80 is for preventing the input voltage excessively high and damaging other components, for example, excessively high
Input voltage may cause being burned for BQ25700A.Wherein, which can be hard to be made of component
Part circuit.For example, the overvoltage crowbar 80 can be made of the chip with over-voltage protecting function.For example, the overvoltage protection
Circuit 80 includes TPS2400.
It should be noted that the overvoltage crowbar 80 is not the necessary circuit of charging circuit 200, it can be according to reality
Border is using addition or omits, for example, in some other embodiments, if input voltage is not in very high situation, which is protected
Protection circuit 80 can be omitted.
The first inspection leakage resistance 81 is for detecting the electric current for being input to the step-up/step-down circuit 20, the second inspection galvanic electricity
The electric current that resistance 82 is exported by the step-up/step-down circuit 20.By the detection of input current and output electric current, so as to charging process
In overcurrent, short circuit situations such as detected.
Specifically, the step-up/step-down circuit 20 include buck input terminal 201 and buck output end 202, described first
Inspection leakage resistance 81 is connect with the buck input terminal 201, and the second inspection leakage resistance 82 and the buck output end 202 connect
It connects.
Wherein, the input current for being input to the step-up/step-down circuit 20 is detected by the first inspection leakage resistance 81, is passed through
Second inspection leakage resistance 82 detection is from the output electric current of the step-up/step-down circuit 20, also, the input current and described defeated
Circuit is stored in the step-up/step-down circuit 20 out.
The processor 83 is communicated to connect with the step-up/step-down circuit 20, to realize the number with the step-up/step-down circuit 20
According to interaction.Wherein, the processor 83 can be communicated with the step-up/step-down circuit 20 by various suitable communication protocols,
For example, I2C, serial port protocol or other agreements etc..
The processor 83 is used to transfer data to the step-up/step-down circuit 20 by the communication connection, for the liter
Reduction voltage circuit 20 configures Current Voltage parameter.The Current Voltage parameter can be input undervoltage, input over-voltage, input current, defeated
The parameters such as voltage, output electric current out.By the configuration of Current Voltage parameter, so as to under-voltage, the over-voltage, mistake in charging process
Situations such as stream, short circuit, is protected.
It should be noted that the processor 83 can be any suitable processor, for example, control unit (Control
Unit, CU), micro-control unit (Microcontroller Unit, MCU), single-chip microcontroller etc..
The temperature sensing circuit 84 is connect with the processor 83.The temperature sensing circuit 84 is charging for detecting
Temperature information in the process, to be detected to the excess temperature situation in charging process.Also, the temperature sensing circuit 84 will
The temperature information is sent to the processor 83, so that 83 devices of the processing are according to the temperature information, carries out temperature adjustment,
The case where to prevent excess temperature in charging process.
For example, when temperature sensing circuit 84 detects that temperature is increased to certain value, for example, working as temperature sensing circuit 84
When detecting that temperature is greater than preset temperature threshold, processor 83 starts to make step-up/step-down circuit to 20 configuration parameter of step-up/step-down circuit
20 output electric current reduces, or is in an off state step-up/step-down circuit 20, to reduce the temperature in charging process.
Wherein, which can be the hardware circuit being made of component.For example, the temperature sensing circuit
84 can be made of the sensor with temperature detecting function, such as temperature sensor.
The display device 85 is connect with the processor 83, and the display device 85 is for showing charging status information.
For example, charging status information may include current information, information of voltage, temperature information etc..Such as when occurring excess temperature in charging process
The case where when, the state instruction of excess temperature is shown by display device 85.Wherein, display device 85 can be display etc..
The linear voltage regulator 86 is connect with the processor 83, and the linear voltage regulator 86 is used for being input to the place
The voltage for managing device 83 carries out steady pressure treatment, to provide stable voltage for processor 83.Wherein, which can be with
For linear voltage regulators such as low pressure difference linear voltage regulators (low dropout regulator, LDO).
Charging circuit 200 provided in an embodiment of the present invention inputs its electricity by 20 pairs of step-up/step-down circuit of charging circuit 200
The input voltage of input terminal 10 is pressed to carry out buck adjustment, so that the charging circuit 200 is adapted to different charging units
Input voltage, so that different charging units is able to satisfy the charging requirement of battery.Also, the charging circuit 200 is passing through
While first voltage output end 40 exports the first output voltage to charge for battery 300, also pass through second voltage output end 50
The second output voltage is exported can while be filled to battery 300 and electrical equipment 400 to realize for the charging of electrical equipment 400
The effect of electricity.
In addition, situations such as charging circuit 200 can also be to under-voltage, over-voltage, excess temperature, overcurrent, short circuit in charging process
It is detected, to protect the safety in charging process.
Please referring to Fig. 7 is a kind of schematic diagram of charging system provided in an embodiment of the present invention.The charging system 700 is for dividing
It Wei not battery 300 and the charging of electrical equipment 400.Wherein, which includes: charging unit 100 and above-mentioned charging circuit
200.The charging unit 100 is connect with the charging circuit 200, also, the charging circuit 200 respectively with the battery
300 and the electrical equipment 400 connect.
The charging unit 100 is used to provide the described input voltage, and the input voltage is adjusted through the charging circuit 200
Afterwards to be respectively that the battery 300 and the electrical equipment 400 charge.
Wherein, the charging unit 100 can be the battery etc. of automobile, and the battery 300 can be the battery etc. of aircraft,
The electrical equipment 400 can be the remote control device etc. of aircraft.
Charging system 700 provided in an embodiment of the present invention, different charging units may be implemented can all fill for battery 300
Electricity.Also, while for the charging of battery 300, it can also charge for electrical equipment 400.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；At this
It under the thinking of invention, can also be combined between the technical characteristic in above embodiments or different embodiment, step can be with
It is realized with random order, and there are many other variations of different aspect present invention as described above, for simplicity, they do not have
Have and is provided in details；Although the present invention is described in detail referring to the foregoing embodiments, the ordinary skill people of this field
Member is it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of skill
Art feature is equivalently replaced；And these are modified or replaceed, each reality of the application that it does not separate the essence of the corresponding technical solution
Apply the range of a technical solution.
Claims (16)
1. a kind of charging circuit characterized by comprising
Voltage input end, first voltage output end, second voltage output end, step-up/step-down circuit and reduction voltage circuit, the voltage
Input terminal is connect with the step-up/step-down circuit, and the step-up/step-down circuit and the first voltage output end and the reduction voltage circuit connect
It connects, the reduction voltage circuit is connect with the second voltage output end；
The step-up/step-down circuit is for receiving and adjusting the input voltage inputted by the voltage input end, to obtain the first adjustment
Voltage, and by the first adjustment voltage output to the first voltage output end, with defeated by the first voltage output end
The first output voltage is battery charging out；
The reduction voltage circuit is for receiving and adjust the first adjustment voltage inputted by the step-up/step-down circuit, to obtain the
Two adjustment voltages, and by the second adjustment voltage output to the second voltage output end, with defeated by the second voltage
Outlet exports the second output voltage as electrical equipment charging.
2. charging circuit according to claim 1, which is characterized in that the charging circuit further includes feed circuit, described
Feed circuit is connect with the first voltage output end and the step-up/step-down circuit；
The feed circuit is used to the first output voltage that the first voltage output end exports feeding back to the lifting piezoelectricity
Road, the step-up/step-down circuit carry out voltage adjustment according to first output voltage and input voltage.
3. charging circuit according to claim 2, which is characterized in that the step-up/step-down circuit includes following buck chip
In any one: BQ25700A, SC8802, ISL95338.
4. charging circuit according to claim 3, which is characterized in that when the step-up/step-down circuit includes BQ25700A,
If the BQ25700A detects that the input voltage is higher than first output voltage, the BQ25700A is in decompression shape
State, to carry out decompression adjustment；If the BQ25700A detects that the input voltage is lower than first output voltage, described
BQ25700A is in pressure-increasning state, to carry out boosting adjustment.
5. charging circuit according to claim 4, which is characterized in that the BQ25700A includes: control chip, first
Metal-oxide-semiconductor, the second metal-oxide-semiconductor, third metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, the first inductance, first capacitor；
The drain electrode of first metal-oxide-semiconductor is connect with the voltage input end, the grid of first metal-oxide-semiconductor and the control chip
The connection of HIDRV1 pin, the source electrode of first metal-oxide-semiconductor connect with the drain electrode of second metal-oxide-semiconductor, also, described second
The drain electrode of metal-oxide-semiconductor is also connect with one end of first inductance, the source electrode ground connection of second metal-oxide-semiconductor, second metal-oxide-semiconductor
Grid is connect with the LODRV1 pin of the control chip, the drain electrode of the other end of first inductance and the third metal-oxide-semiconductor
Connection, also, the drain electrode of the third metal-oxide-semiconductor is also connect with the source electrode of the 4th metal-oxide-semiconductor, the source electrode of the third metal-oxide-semiconductor
Ground connection, the grid of the third metal-oxide-semiconductor with it is described control chip LODRV2 pin connect, the grid of the 4th metal-oxide-semiconductor and
The LODRV2 pin connection of the control chip, the drain electrode of the 4th metal-oxide-semiconductor are connect with the first voltage output end, and
And the drain electrode of the 4th metal-oxide-semiconductor is also connect with one end of the first capacitor, the other end ground connection of the first capacitor；
When the input voltage is higher than first output voltage, first metal-oxide-semiconductor and second metal-oxide-semiconductor are in switch
State, the third metal-oxide-semiconductor are in an off state, and the 4th metal-oxide-semiconductor is in the conductive state, to carry out decompression adjustment；Work as institute
When stating input voltage lower than first output voltage, the third metal-oxide-semiconductor and the 4th metal-oxide-semiconductor are in switch state, institute
It states the second metal-oxide-semiconductor to be in an off state, first metal-oxide-semiconductor is in the conductive state, to carry out boosting adjustment.
6. charging circuit according to claim 1-5, which is characterized in that the charging circuit further includes QC agreement
Detection circuit, the QC protocol sensing circuitry are connect with the second voltage output end and the reduction voltage circuit；
The second output voltage that the QC protocol sensing circuitry is used to export the second voltage output end carries out the inspection of QC agreement
It surveys, if meeting QC agreement, the reduction voltage circuit will export to the second adjustment voltage of second voltage output end and be adjusted to corresponding
The voltage for meeting QC agreement, to be input to the second voltage output end.
7. charging circuit according to claim 6, which is characterized in that the QC protocol sensing circuitry includes following QC agreement
Any one in detection chip: IP2161, TP1001, FP6601Q.
8. charging circuit according to claim 7, which is characterized in that when the QC protocol sensing circuitry includes IP2161
When, the second voltage output end is USB port, and the USB port includes data minus signal end and data positive signal end, described
The DM pin of IP2161 is connect with the data minus signal end of the USB port, the DP pin and the USB port of the IP2161
Data positive signal end connection.
9. charging circuit according to claim 1-8, which is characterized in that the charging circuit further includes that over-voltage is protected
Protection circuit, the overvoltage crowbar include over-voltage input terminal and over-voltage output end, the over-voltage input terminal and voltage input end
Connection, the over-voltage output end are connect with the step-up/step-down circuit；
The overvoltage crowbar is for preventing the input voltage excessively high.
10. -9 described in any item charging circuits according to claim 1, which is characterized in that the charging circuit further includes first
Leakage resistance and the second inspection leakage resistance are examined, the step-up/step-down circuit includes buck input terminal and buck output end, and described first
Inspection leakage resistance is connect with the buck input terminal, and the second inspection leakage resistance is connect with the buck output end；
It is input to the input current of the step-up/step-down circuit by the first inspection leakage resistance detection, passes through the second inspection galvanic electricity
Resistance detects the output electric current from the step-up/step-down circuit, also, the input current and the output circuit are stored in the liter
Reduction voltage circuit.
11. -10 described in any item charging circuits according to claim 1, which is characterized in that the charging circuit further includes processing
Device, the processor and the step-up/step-down circuit communicate to connect；
The processor is used to transfer data to the step-up/step-down circuit by the communication connection, for the step-up/step-down circuit
Configure Current Voltage parameter.
12. charging circuit according to claim 11, which is characterized in that the charging circuit further includes temperature detection electricity
Road, the temperature sensing circuit are connected to the processor；
The temperature sensing circuit is used to detect temperature information during the charging process, and described in the temperature information is sent to
Processor, the processor carry out temperature adjustment according to the temperature information.
13. charging circuit according to claim 11 or 12, which is characterized in that the charging circuit further includes display dress
It sets, the display device is connected to the processor；
The display device is for showing charging status information.
14. the described in any item charging circuits of 1-13 according to claim 1, which is characterized in that the charging circuit further includes line
Property voltage-stablizer, the linear voltage regulator is connected to the processor, and the linear voltage regulator is used for being input to the processor
Voltage carry out steady pressure treatment.
15. a kind of charging system, which is characterized in that the charging system is for being respectively battery and electrical equipment charging；
The charging system includes charging unit and such as described in any item charging circuits of claim 1-14, the charging unit
It is connect with the charging circuit, also, the charging circuit is connect with the battery and the electrical equipment respectively；
The charging unit is used to provide the described input voltage, and the input voltage is after charging circuit adjustment to be respectively
The battery and electrical equipment charging.
16. charging system according to claim 15, which is characterized in that the charging unit is the battery of automobile, institute
The battery that battery is aircraft is stated, the electrical equipment is the remote control device of aircraft.
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| CN201811391484.1A CN109510261A (en) | 2018-11-21 | 2018-11-21 | A kind of charging circuit and charging system |
| PCT/CN2019/095990 WO2020103474A1 (en) | 2018-11-21 | 2019-07-15 | Charging circuit and charging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811391484.1A CN109510261A (en) | 2018-11-21 | 2018-11-21 | A kind of charging circuit and charging system |
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| CN110365083A (en) * | 2019-08-05 | 2019-10-22 | 维沃移动通信有限公司 | A kind of charging circuit and terminal |
| CN110504728A (en) * | 2019-08-28 | 2019-11-26 | 深圳市圭石南方科技发展有限公司 | A kind of batter-charghing system, method, apparatus, computer equipment and storage medium |
| CN110601326A (en) * | 2019-09-27 | 2019-12-20 | 深圳市绿联科技有限公司 | Double-path intelligent quick-charging adaptive device and charging management method thereof |
| WO2020103474A1 (en) * | 2018-11-21 | 2020-05-28 | 深圳市道通智能航空技术有限公司 | Charging circuit and charging system |
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